Quote Originally Posted by CatFan View Post
The idea that smart chargers don't fully charge a battery is a myth. The best way to determine the state of charge of a battery is to apply a voltage to the battery and measure how much current it draws. Since that is what chargers do, a smart charger always knows exactly how much charge the battery has. Most chargers shut off when the battery draws less than 1A. A trickle charger just overcharges the battery beyond its designed state because they don't monitor the battery state of charge.

Smart chargers are 1000% better than any other charger for fully charging a battery without shortening its life by overcharging.

So, if a smart charger is used and once it shuts off the battery only shows 80% charge with a hygrometer....then charge with a trickle charger for a few hours and the hygrometer indicates full charge....what is the reason for that?